# 用大括号{}创建集合
# set_one = {'Python'}
# set_two= {0.3, 1, 'Python'}
# set_three = {0.3, 1, 1, 'Python'}
#
# print(set_one)
# print(set_two)
# print(set_three)
# 用set()函数创建集合
set_one = set ([1, 1, 2, 3])
set_two= set ((2, 3, 4))
set_three = set('hi')
set_four = set()

print(set_one)
print(set_two)
print(set_three)
print(set_four)
